I recently acquired this as a thrift store pickup and I cannot figure out the Maker's Mark name.

It seems to be which one would call a modernist, brutalist, or organic brooch.

I thought maybe it said well I mean 925 but the name possibly "A. IDAN" or "A. IDAR". But I cannot find anything about that name anywhere. I know that Idan is a moshav in southern Israel. And Idar is a town in Sabarkantha district, Gujarat, India. I don't know if it is even reference to a place but more so to a name.

any help would be greatly appreciated thank you.

I want to thank you 925 - 1000 forums for being here you guys are great.

I take it no one knows? Also the middle round piece is not silver, it's some kind of gem or material, it's rather odd sounding when I tap it, not like a hard mineral like I would think moonstone or similar stone would sound. But more like a hard hollow material, not plastic though. Any thoughts would be appreciated.

Also i have no intention of driving traffic away from your fantastic site, but are there other forums that are similar to this one with help identifying pieces?

I appreciate your responses, thank you. It does look a lot like electroform silver. To be honest I didn't even know such a thing existed. I knew electroplate but not electroform. So it's just a name for hollow precious metal jewelry? Or probably the way it's done eh. I am going to read read read up on it.